Negative-pressure oxygen providing device

ABSTRACT

A negative-pressure oxygen providing device includes a base, a power unit, a first negative-pressure device, a second negative-pressure device, and a water suction member. The power unit is fixed on the base and includes a driving member with a driving shaft and a main shaft which communicates with the driving shaft. The driving member drives the driving shaft and the main shaft. The first negative-pressure device is connected to a lower end of the main shaft and includes multiple blades which are merged in the water. The water suction member is connected to the main shaft and includes multiple paths. Each path has a top portion located above the water and a bottom portion of each path is in the water. The second negative-pressure device is located above the water and fixed to the top of the driving shaft so as to suck air into the driving shaft.

FIELD OF THE INVENTION

The present invention relates to a negative-pressure oxygen providing device, and more particularly, to a negative-pressure oxygen providing device used in aquaculture business to increase the oxygen content in the water by circulating of the water up and down.

BACKGROUND OF THE INVENTION

A conventional oxygen providing device for purifying water generally includes a float, a motor and a water suction member, the float floats on the water and the motor is connected on top of the float. A hollow shaft is connected to the driving shaft of the motor and extends through the float. A blade unit is connected to the lower end of the hollow shaft and merged in the water so as to disturb the water when the motor drives. A suction force is generated by the rotation of the blade unit and the air outside the water is sucked into the water via the hollow shaft to increase the oxygen content. The suction member is fixed to the hollow shaft and located at the center of the float, its bottom is in contact with the water while its top is exposed out from the water. A path is defined between the suction member and the central hole of the float. When the suction member is operated by the motor, the blades disturb the water which is then disturbed by the suction member and splashed to the surface of the water via the path. However, there is only one blade unit under the water and which can only affect limited area of the water.

The present invention intends to provide a negative-pressure oxygen providing device which improves the shortcomings of the conventional device.

SUMMARY OF THE INVENTION

The present invention relates to a negative-pressure oxygen providing device and includes a base, a power unit, a first negative-pressure device, a second negative-pressure device, and a water suction member. The power unit is fixed on the base and includes a driving member with a driving shaft and a main shaft which communicates with the driving shaft. The driving member drives the driving shaft and the main shaft. The first negative-pressure device is connected to a lower end of the main shaft and includes multiple blades which are merged in the water. The water suction member is connected to the main shaft and includes multiple paths. Each path has a top portion located above the water and a bottom portion of each path is in the water. The second negative-pressure device is located above the water and fixed to the top of the driving shaft so as to suck air into the driving shaft.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view to show the negative-pressure oxygen providing device of the present invention;

FIG. 2 is a perspective view to show the first negative-pressure device of the present invention;

FIG. 3 is a perspective view to show the water suction member of the present invention;

FIG. 4 is an exploded view of the second negative-pressure device of the present invention;

FIG. 5 is a perspective view to show the second negative-pressure device of the present invention;

FIG. 6 is a top view to show the second negative-pressure device of the present invention;

FIG. 7 is a cross-sectional view taken along plane A-A in FIG. 6;

FIG. 8 is a perspective view to show the negative-pressure oxygen providing device of the present invention;

FIG. 9 is a top view of the negative-pressure oxygen providing device of the present invention;

FIG. 10 is a cross-sectional view taken along plane B-B in FIG. 9;

FIG. 11 is an enlarged view of the circled portion C in FIG. 10;

FIG. 12 is a second embodiment of the water suction member of the present invention;

FIG. 13 is a third embodiment of the water suction member of the present invention;

FIG. 14 shows another embodiment of the negative-pressure oxygen providing device of the present invention, and

FIG. 15 shows yet another embodiment of the negative-pressure oxygen providing device of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1, 5 and 9, the negative-pressure oxygen providing device of the present invention comprises a base 10, a power unit 20, a main shaft 30, at least one first negative-pressure device 40, a water suction member 50, at least one second negative-pressure device 60 and a case 70. The base 10 includes frames 11 connected thereon and the power unit 20 is fixed to the frames 11. The power unit 20 includes a driving member 21, a driving shaft 22 and a top cap 23. The driving member 21 drives the driving shaft 22 which is a hollow shaft. In this embodiment, the driving member 21 is a motor or an engine. The driving shaft 22 is a hollow tube. The top cap 23 has orifices 230 in the top thereof and is mounted on a top of the driving member 21. The main shaft 30 is a hollow shaft and connected to a lower end of the driving shaft 22 and communicates with the driving shaft 22. The driving shaft 22 of the power unit 20 and the main shaft 30 can be one-piece.

As shown in FIGS. 1 and 2, the at least one negative-pressure device 40 is connected to a lower end of the main shaft 30 and includes multiple blades 41 located along a periphery thereof. Each blade 41 has a thin first end 411 which becomes gradually thicker toward a second end 412 of the blade 41. A lower end of the main shaft 30 and the negative-pressure device 40 are merged into water.

As shown in FIGS. 1 and 3, the water suction member 50 has a passage 51 defined centrally therethrough and the main shaft 30 securely extends through the passage 51. The water suction member 50 is located on the at least one negative-pressure device 40 and has multiple paths 52 spirally defined in a periphery thereof. Each path 52 has a top portion located above the water and a bottom portion of each path 52 is in the water.

As shown in FIGS. 1 and 4 to 7, the second negative-pressure device 60 is located above the water and fixed to a top of the driving shaft 22 so as to suck air into the driving shaft 22. The second negative-pressure device 60 includes a bottom blade unit 61, a top blade unit 62, a bottom cap 63 and a collar 64. The bottom blade unit 61 includes a bottom disk 610 and multiple curved top guide plates 611 and curved bottom guide plates 614 extend radially from top and bottom of the bottom disk 610 respectively. A top guide groove 612 is defined between two adjacent top guide plates 611 and a bottom guide groove 615 is defined between two adjacent bottom guide plates 614. The top guide grooves 612 communicate to each other at a center of the bottom disk 610. The bottom guide grooves 615 communicate to each other at the center of the bottom disk 610. Multiple notches 613 are defined in a periphery of the bottom disk 610 and communicate with the top and bottom guide grooves 612, 615 corresponding thereto. The top blade unit 62 has a top disk 620 and an inlet 621 is defined centrally therethrough. Multiple blades 623 extend radially from a top of the top disk 620. The top blade unit 62 is fixed to a top of the bottom blade unit 61. The top disk 610 seals top portions of the top guide grooves 612. The inlet 621 communicates with the top guide grooves 612. The bottom cap 63 is fixed to an underside of the bottom blade unit 61 and seals bottom portions of the bottom guide grooves 615. The bottom cap 63 has an outlet 631 defined centrally therethrough which communicates with the bottom guide grooves 615. The outlet 631 communicates with the driving shaft 22. The collar 64 encloses two respectively peripheries of the bottom blade unit 61 and the top blade unit 62 so as to seal the top and bottom guide grooves 612, 615. The top cap 23 is mounted onto the second negative-pressure device 60.

As shown in FIGS. 1 and 10, the case 70 has a space 71 defined therein and the driving member 20 and the second negative-pressure device 60 are accommodated in the space 71. The case 70 has at least one suction hole 72 which communicates with the inlet 621 via the orifices 230 of the top cap 23.

As shown in FIG. 1, the base 10 is a float which is a ring-shaped float to provide a floating force.

FIG. 3 shows that the paths 52 each is formed by a tube 520 with a U-shaped cross section.

FIG. 12 shows that each path 52 is formed on a plate 521.

FIG. 13 shows that each path 52 is formed by a hollow tube 522 which is inclined at an angle. The number of the paths 52 is at least two, preferably, the number is eight.

FIG. 1 shows that the main shaft 30 and the driving shaft 22 are fixed to each other by bolts 31.

FIG. 1 shows that the main shaft 30 and the water suction member 50 are connected to each other by bolts 32.

FIG. 14 shows that the first negative-pressure device 40 is a flat box like device and multiple holes 42 and spiral grooves 43 are defined in the periphery thereof.

FIG. 15 shows that the first negative-pressure device 40 is a flat box like device and multiple blades 44 are connected to the periphery thereof.

The advantages of the present invention is that:

1. The first negative-pressure device 40 is located in the water and stirs the water to generate negative pressure and the second negative-pressure device 60 is located above the water which is operated to suck air into the water to increase the oxygen content via the suction holes 72, the orifices 230, the inlet 621, the top guide grooves 612, the notches 613, the bottom guide grooves 615, the outlet 631, the driving shaft 22 and the main shaft 30.

2. The first negative-pressure device 40 is operated in the water and the second negative-pressure device 60 is operated in the air to generate large negative pressure, and the main shaft 30 is long and deep into the water.

3. Instead of the first negative-pressure device 40 and the second negative-pressure device 60, the air suction member 50 assists to stir the water. When the air suction member 50 stops, which alerts the user that the negative-pressure oxygen providing device is not in function.

4. When the air suction member 50 is in operation, the flowing water is splashed out via the paths 52 to dispense the heat and increase the oxygen content in the water.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1. A negative-pressure oxygen providing device comprising: a base having frames connected thereon; a power unit fixed to the frames and including a driving member, a driving shaft and a top cap, the driving member driving the driving shaft which is a hollow shaft, the top cap having orifices in the top thereof and mounted on a top of the driving member; a main shaft being a hollow shaft and connected to a lower end of the driving shaft and communicating with the driving shaft; at least one negative-pressure device connected to a lower end of the main shaft and including multiple blades located along a periphery thereof, each blade having a thin first end which becomes gradually thicker until a second end of the blade, a lower end of the main shaft and the negative-pressure device being merged into water; a water suction member having a passage defined centrally therethrough and the main shaft securely extending through the passage, the water suction member located on the at least one negative-pressure device and having multiple paths spirally defined in a periphery thereof, each path having a top portion located above the water and a bottom portion of each path being in the water; at least one second negative-pressure device located above the water and fixed to a top of the driving shaft so as to suck air into the driving shaft, the at least one second negative-pressure device having a bottom blade unit, a top blade unit, a bottom cap and a collar, the bottom blade unit including a bottom disk and multiple curved top guide plates and curved bottom guide plates extending radially from top and bottom of the bottom disk respectively, a top guide groove defined between two adjacent top guide plates and a bottom guide groove defined between two adjacent bottom guide plates, the top guide grooves communicating with each other at a center of the bottom disk, the bottom guide grooves communicating to each other at the center of the bottom disk, multiple notches defined in a periphery of the bottom disk and communicating with the top and bottom guide grooves corresponding thereto, the top blade unit having a top disk and an inlet defined centrally therethrough, multiple blades extending radially from a top of the top disk, the top blade unit fixed to a top of the bottom blade unit, the top disk sealing top portions of the top guide grooves, inlet communicating with the top guide grooves, the bottom cap fixed to an underside of the bottom blade unit and sealing bottom portions of the bottom guide grooves, the bottom cap having an outlet defined centrally therethrough which communicates with the bottom guide grooves, the outlet communicating with the driving shaft, the collar enclosing two respectively peripheries of the bottom blade unit and the top blade unit so as to seal the top and bottom guide grooves, the top cap mounted onto the at least one second negative-pressure device, and a case having a space defined therein and the driving member and the at least one second negative-pressure device being accommodated in the space, the case having at least one suction hole which communicates with the inlet via the orifices of the top cap.
 2. The device as claimed in claim 1, wherein the base is a float.
 3. The device as claimed in claim 1, wherein the base is a ring-shaped float.
 4. The device as claimed in claim 1, wherein the paths each is formed by a tube with a U-shaped cross section.
 5. The device as claimed in claim 1, wherein each path is formed on a plate.
 6. The device as claimed in claim 1, wherein each path is formed by a hollow tube which is inclined at an angle.
 7. The device as claimed in claim 1, wherein the main shaft and the driving shaft are fixed to each other by bolts.
 8. The device as claimed in claim 1, wherein the main shaft and the water suction member are connected to each other by bolts.
 9. The device as claimed in claim 1, wherein the driving member is a motor or an engine.
 10. The device as claimed in claim 1, wherein the driving shaft of the power unit and the main shaft are one-piece. 